We report on an experimental investigation of recording a plane-wave volume holographic transmission gratingin a photopolymerizable nanoparticle-polymer composite film dispersed with hyperbranched-polymer (HBP)organic nanoparticles in an acrylate monomer blend codoped with an electron donor and acceptor photo-initiator/inhibitor system. The HBP organic nanoparticle possesses the ultrahigh refractive index of 1.82 at532 nm owing to the inclusion of triazine and aromatic ring units, which provides a large difference in the refrac-tive index between HBP and the formed polymer. It is found that the recorded NPC grating with 23 vol.% HBPdispersion possesses the saturated refractive index modulation amplitude as large as 4.5×10~(-2) at 532 nm and atrecording intensities of a few mW/cm~2. Obtained results suggest the use of our newly developed HBP-dispersedNPC as volume optical holographic elements for wearable display for augmented and mixed reality.
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